HR2731

Above the horizon. Rise: 1:11 | Tran: 6:50 | Set: 12:28

Alt: 34.08° Az: 190.45° Direction: South

HR2731 is a double giant star of spectral class K5 in the constellation of Monoceros.

HR2731 visual magnitude is 5.75. Because of its faintness, HR2731 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR2731. The red arrow shows the motion of HR2731 during the next 10000 years (-2.50 arcmin in Right Ascension and 1.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 07h 15m 25s

Declination -03° 56’ 44”

Hour Angle 00h 34m 37s

Sideral Time 07h 50m 02s

J2000

Right Ascension 07h 14m 11s

Declination -03° 54’ 05”

Galactic Coordinates

Galactic Longitude 219.01°

Galactic Latitude 3.27°

Finder Chart

Simplified finder chart for HR2731.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.75

Class Giant

Absolute magnitude -0.62

Spectral Type K5III

Color Index (B-V) 1.58

Temperature 3677K

The red dot in the diagram below shows where HR2731 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2731. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR2731 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR2731 double sysyem:

Main star magnitude 5.75

Secondary star magnitude 10.75

Magnitude difference 5

Separation 2.7 arcsec

Distance, Radial Speed, Proper Motion

HR2731 is distant 612.78 light years from the Sun and it is moving far from the Sun at the speed of 22 kilometers per second.

Distance (parsec) 187.97

Distance (light year) 612.78

Radial Speed 22 km/s

Proper Motion RA -0.015 arcsec/y

Proper Motion Dec 0.007"/y

Alternative Designations

Henry Draper Catalogue HD55775

SAO Catalogue SAO134391

Hipparcos Catalogue HIP34975

Durchmusterung Catalogue BD-03 1804

Aitken Double Star Catalogue ADS5911

Visibility from Your Location

Today's HR2731 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 93.9° RISE 1:11

Max altitude: 34.6° TRANSIT 6:50

Azimuth: 266.1° SET 12:28

Set Location

Other stars in Monoceros